Secondary synovial chondromatosis

Secondary synovial chondromatosis (SOC) is a disorder that results in intra-articular loose bodies as a result of trauma, osteoarthrosis, or neuropathic arthropathy. It is quite distinct to primary synovial chondromatosis. Pathologically concentric rings of growth may be seen.

Radiographic features

Secondary osteochondromatosis typically demonstrates associated and more prominent changes of the underlying degenerative disease of the joint. Any intra-articular bodies tend to be larger, less numerous, and more varied in size and shape than in primary synovial chondromatosis.